Preparing Curved Root Canals : For the Successful Endodontics

To compare the performance of ProTaper rotary instruments and stainless steel K-Flexofiles in preparing curved root canals in terms of changes in angle of curvature, apical transportation and production of canal aberrations and also to record the rate of separation of ProTaper files. ProTaper rotary instruments maintained the curvatures better however it performed equally in terms of apical canal transportation when compared with stainless-steel instruments. For procedural errors and canal aberrations, ProTaper instruments produced more elbows. Incidence of fractures was enhanced with increasing size of ProTaper files, with most fractures occurring with file size #30 (F3) and #25 (F2).